Bobbin changing device for pirn winding frames



March 17, 1936. w R NERS ET AL 2,034,248

BOBBIN CHANGING DEVICE FOR PIRN WINDING FRAMES Filed Aug. I9, 1953 5 Sheets-Sheet l March 17, 1936. v w. REINERS ET AL 2,034,248

BOBBIN CHANGING DEVICE FOR PIRN WINDING FRAMESv Filed Aug. 19, 1933 SSheets-Shet 2 March 17, 1936. w. REINERS ET AL 2,034,248

BOBBIN CHANGING DEVICE FOR PIRN WIND ING FRAMES Filed Aug. 19, 1953 s Sheets-Sheet 5 Patented Mar. 17, 1936 BOBBIN CHANGING DEVICE FOR PIRN WINDING FRAMES Wilhelm Reiners and Gustav Kahlisch. Gladbach-Rheydt. Germany, assignors to W. Schlafhorst & 00., Gladbach-Rheydt, Germany, a corporation of Germany Application August 19, 1933,Serial No. 685,954

In Germany December 23, 1932 4 Claims.

We are aware of the spooling frames for sewing thread being fitted with devices for the simultaneous feeding of the empty spools to a plurality of spindles by means of an endless belt.

twisting frames have been fitted with devices intended to doif the full bobbins mechanically and to place the empty tubes on a plurality of spindles at a time.

10 However, the design of all these known devices is too complicated for use in winding frames generally and more particularly so for pirn winding frames on account of the comparatively short length of yarn in the pirn which is quickly wound is on, and they are therefore too cumbersome in manipulation.

The present invention has for its object to effeet the bobbin change in the pirn winding frames in a simple fashion. Therefore, the object of the 20 invention is a bobbin changing device which doffs the full bobbins from a. plurality of spindles simultaneously and places the empty tubes on the latter.

, The invention consists of a rail placed across the spindles and arranged so as to ,be movable to and fro in the direction of the spindles. It has fork-shaped notches adapted close to the spindles and collaring the spindles behind the pirn tubes so that on the outward movement of the rail all the 30 pirns are simultaneously doffed. We provide, in

addition to the afore-mentioned rail, a frame carrying trays for holding the empty bobbin tubes, which is placed in front of and across the spindles, and in the direction of whose axis it is movable 35 to and fro.

The two arrangements, namely the notched rail and the tube frame may also be united in-a common body for dofling the full bobbins and for subsequently putting on the empty tubes.

40 Fig. 1 is a sectional view of the machine parallel to the spindle axes,

Fig. 215 a plan view of Fig. 1,

Fig. 31s a sectional view corresponding to Fig. 1, showing the elements in a different operative po 45 sition,

Fig. 4 is a plan view of Fig. 3,

Fig. 5 is a sectional view corresponding to Figs. 1 and 3, showing the elements in a different operative position,

60 Fig. 6 is a sectional view corresponding to Fig. 5, showing the position of the parts after the empty bobbin tubes have been charged onto the spindles,

Fig. 7 is a sectional view of a modified form of the machine parallel to the spindle axes,

obj Fig.8is aplan viewofFlg.7.a-nd

We are also aware that spinning, doubling and Fig. 9 is a fragmentary vertical sectional view showing the rear face of the dofiing bar. In the embodiment according to Figs. 1-6, a

rail l5 extending across the spindles is rigidly connected to two or more toothed racks IS, the 5 teeth l6a of which engage with wheels i8 on their common shaft ll, so that on turning the shaft I! in clockwise direction, the rail i5 is moved outward whereby it draws all the pirns #2 from the spindles, whence they aretransferred 10 to a collecting container II. The rail if: has notches 20 in its upper edge, the number of notches 26 corresponding to the number of the spindles, every one of which is engaged by a notch collaring the spindle behind the respective pirn i2. It would be possible to employ a rail without notches and to bring it 'quite near to the spindles, but in this case the pirns would not be sufliciently c0ntrol1ed.' Below the shafts iii are a second set' of shafts 9 having at their inner ends teeth. engaging toothed wheels l0 fixed on shaft I 4. At the outer ends of shafts 9 are rollers 22, upon which is mounted a tube rest unit comprising longitudinal bars 6, cross bars i and tube" rests 5 for holding empty pirn tubes '4. The tube rest unit is movable-in a direction parallel to the spindle axes by rotation of shaft I4 and is movable transverse to the spindle axes for a short distance by the rolling of the tube rest unit upon rollers 22. This is necessary in order to permit the transferring of the full pirns through the interstices between the tube rests to the collecting container H which is in this case suspended on the toothed racks 9, and to get the empty bobbin tubes in front of the spindles afterwards.

The sequence of operation is in this case as follows:

A pirn tube is placed in every tray 5 while the pirns l2 are being wound. When all the pirns II are full as shown in Fig. 1, the rail l5 is shifted to the left, by turning the shaft I I, and all the bobbins are doffed from. their spindles so that they can fall into the collectingcontainer II as shown in Fig. 3. When this is done, the tube rest unit 6, l is moved so far in the direction 11 (Figs. 5 and 7) that the pirn tubes 4 are brought in front of the spindles.

Thereupon the two shafts l4 and II are turned so that the tube rest unit 6, (together with the rail I 5 are transferred from the position shown in Fig. 4 to the one shown by Fig. 5, which means that they move in the direction of the arrow at. All the pirn tubes-are thereby placed on the spindles. The cradle 6, I with the collecting container u a then brought back in the position shown in Fig. 6 by turning the shaft ll in the opposite direction.

In the embodiment shown in Figs. '7 to 9, the rail I5 is made to form part of the tube rest unit 6, 1 in a fashion integrally interconnecting the two parts. The framing carries two or more rods 25 with slidable and easily movable doubleflanged rollers 22a, between the flanges of which the tube rest unit is displaceable for a short distance transversely to the spindle axes exactly the same as in the embodiment shown in Figs. 1-6. The to and fro movement in direction of the shaft is herein efiected by means of a lever 28 fitted to a shaft 21 which simultaneously carries two or more fork-levers 28, the fork of which engages a rod 29 secured to the tube rest unit. On moving the lever 26 to the right, the bobbin changing device is also shifted to the right and the pirn tubes 4 are placed on the spindles. When this is done, the tube rest unit is shifted transversely to the spindle axes and the device remains in this position until the pirns are full. When the pirns are full, the lever 26 is moved back into the position as shown in Fig. 7, whereby the pirns are doffed and deposited in a container placed below them, which is not shown in the illustration. To permit the tube rest unit to be shifted in the direction across the bobbins, the right hand side wall I5 of same must have oblong recesses I541, according to Fig. 9, to permit this side wall to remain withits stripping faces I52) behind the pirn.

We claim:

1. In combination with a group of parallel spindles, a dofilng bar common to the spindles and having notches collaring the spindles, a frame bearing a tube rest unit movable with respect to said frame in a horizontal direction transverse to the axes of the spindles, said doffing bar and said frame being mounted so as to be movable only parallel to the axes of the spindies.

2. Apparatus as described in claim 1, wherein said domng bar and said frame are movable independently of each other.

3. In combination with a group of parallel spindles, a frame mounted so as to be movable only parallel to the axes of the spindles, a tube rest unit'movable with respect to said frame in a direction transverse to the axes of the spindles, and means for stripping the spindles simultaneously.

4. In combination with a group of parallel spindles, a frame mounted so as to be movable WILHELM RElINERS. GUSTAV KAHLISCH. 

